You're mistaken, people will never think graphics are "too" good, except in the first few months after a new console is released .

And I actually think they don't use actors because they want to have a CG look. It's more like they don't use actors because actors can't do all the crazy shut that computer animated characters can .
Oh no, there's no such thing as too good: Just too realistic. The whole thing that's so appealing about CG is that is almost looks real but it's obvious it isn't. The whole 'smooth' and 'soft' look of CG is oddly appealing, for no apparent reason. It just is. Though your right about the stunts, the CG look is what really makes it.

Well Sony have already announced that they are going to make another console. As have Microsoft.
Ah, yes that would be something similar to the Wii, like I said before.